<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *	   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

/**
 * @package log4php
 * @subpackage helpers
 */
class LoggerDatePatternConverter extends LoggerPatternConverter {

	/**
	 * @var string
	 */
	private $df;
	
	/**
	 * Constructor
	 *
	 * @param string $formattingInfo
	 * @param string $df
	 */
	public function __construct($formattingInfo, $df) {
		parent::__construct($formattingInfo);
		$this->df = $df;
	}

	/**
	 * @param LoggerLoggingEvent $event
	 * @return string
	 */
	public function convert($event) {
		$timeStamp = $event->getTimeStamp();
		$usecs = round(($timeStamp - (int)$timeStamp) * 1000);
		$this->df = preg_replace('/((?<!\\\\)(?:\\\\{2})*)u/', '${1}' . sprintf('%03d', $usecs), $this->df);
		return date($this->df, $event->getTimeStamp());
	}
}
